CN112365846B - Pixel circuit and display device - Google Patents
Pixel circuit and display device Download PDFInfo
- Publication number
- CN112365846B CN112365846B CN202011260555.1A CN202011260555A CN112365846B CN 112365846 B CN112365846 B CN 112365846B CN 202011260555 A CN202011260555 A CN 202011260555A CN 112365846 B CN112365846 B CN 112365846B
- Authority
- CN
- China
- Prior art keywords
- transistor
- driving
- voltage
- electrode
- data writing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000003990 capacitor Substances 0.000 claims description 34
- 238000001514 detection method Methods 0.000 claims description 28
- 230000003071 parasitic effect Effects 0.000 claims description 6
- 241001270131 Agaricus moelleri Species 0.000 abstract description 6
- 239000010409 thin film Substances 0.000 description 7
- 238000007641 inkjet printing Methods 0.000 description 5
- 229920001621 AMOLED Polymers 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The application provides a pixel circuit and a display device. The voltage holding unit used for raising the grid electrode of the driving transistor is used for raising the voltage for raising the grid electrode of the driving transistor, so that the starting voltage interval of the starting stage is increased, the gray scale division is facilitated, the voltage difference between different gray scales after the gray scale division is avoided to be smaller than the minimum voltage resolution of an IC (integrated circuit), the difficulty of gray scale switching is reduced, and the control of the gray scale switching is facilitated.
Description
Technical Field
The present disclosure relates to display technologies, and particularly to a pixel circuit and a display device.
Background
With the development of display technology, the requirements for display panels are becoming higher and higher, AMOLED (Active-matrix Organic Light-Emitting Diode, Active matrix Organic Light-Emitting Diode or Active matrix Organic Light-Emitting Diode) is adopted as a new display technology to be pursued by people, and the process of OLED (Organic Light-Emitting Diode display) is mainly divided into evaporation and ink-jet printing, wherein the ink-jet printing process is considered as a scheme which has cost advantages and is suitable for future mass production. However, compared with the evaporation OLED device, the current ink-jet printing OLED device has the characteristics of low lighting voltage and narrow voltage interval. When the gray scale is switched, especially when the 8-bit display is upgraded to the 10-bit display, the voltage interval needs to be further subdivided, and the voltage difference between different gray scales is smaller than the minimum voltage resolution of an Integrated Circuit (IC) due to the excessively narrow voltage interval; affecting the normal display of the display panel.
Disclosure of Invention
The application provides a pixel circuit and a display device, which are used for solving the technical problems that the existing ink-jet printing OLED device is low in lighting voltage and narrow in voltage interval, so that the voltage difference between different gray scales after gray scale division is smaller than the minimum voltage resolution of an IC (integrated circuit), and normal display is influenced.
In order to solve the above problems, the technical solution provided by the present application is as follows:
the application provides a pixel circuit for driving a light-emitting element, which comprises a data writing transistor, a reset detection transistor, a driving transistor for generating driving current, and a voltage holding unit for pulling up the lighting voltage of the grid electrode of the driving transistor;
the grid electrode of the data writing transistor is connected to a first driving signal, the first electrode of the data writing transistor is connected to a data voltage, and the second electrode of the data writing transistor is connected to the grid electrode of the driving transistor;
the first electrode of the driving transistor is connected to an anode voltage, the second electrode of the driving transistor is connected to the first end of the driving light-emitting element, and the second end of the light-emitting element is connected to a cathode voltage;
the grid electrode of the reset detection transistor is connected to a second driving signal, the first electrode of the reset detection transistor is connected to a reset detection signal line, and the second electrode of the reset detection transistor is connected between the second electrode of the driving transistor and the first end of the driving light-emitting element in parallel;
the voltage holding unit is connected in parallel between the second electrode of the data writing transistor and the gate of the driving transistor.
In the pixel circuit provided in the embodiment of the present application, the voltage holding unit includes a voltage holding capacitor, a first end of the voltage holding capacitor is connected in parallel between the second electrode of the data writing transistor and the gate of the driving transistor, and a second end of the voltage holding capacitor is grounded.
In the pixel circuit provided by the embodiment of the application, the pixel circuit driving at least comprises a data writing phase and a data writing closing phase;
in the data writing phase, driving the data writing transistor, the reset detection transistor and the driving transistor to be conducted;
and driving the data writing transistor and the reset detection transistor to be turned off in the data writing turn-off phase.
In the pixel circuit provided in the embodiment of the present application, in the data writing off phase, a difference between a capacitance value of one end of the gate of the driving transistor and a capacitance value of one end of the second electrode of the driving transistor is within a threshold capacitance range, and a voltage difference between one end of the gate of the driving transistor and one end of the second electrode of the driving transistor is less than or equal to 0.1V.
In the pixel circuit provided in the embodiment of the present application, in the data writing off phase, a capacitance value of one end of the gate of the driving transistor is equal to a sum of a capacitance value of a parasitic capacitor of the data writing transistor and a capacitance value of the voltage holding capacitor.
In the pixel circuit provided in this embodiment of the application, in the data writing off phase, a capacitance value of one end of the second electrode of the driving transistor is equal to a sum of a capacitance value of a parasitic capacitance of the reset detection transistor and a capacitance value of an intrinsic capacitance of the light emitting element.
In the pixel circuit provided in the embodiment of the present application, in the data writing off phase, a difference between a capacitance value of the voltage holding capacitor and a capacitance value of an intrinsic capacitor of the light emitting element is less than or equal to 20 fF.
In the pixel circuit provided in the embodiment of the present application, the capacitance value of the voltage holding capacitor is 200 fF.
In the pixel circuit provided in the embodiment of the present application, the data writing transistor, the reset detection transistor, and the driving transistor are all P-type transistors.
The application also provides a display device comprising the pixel circuit.
The beneficial effect of this application: this application is used for drawing high through setting up the voltage holding unit that drive transistor grid rises bright voltage promotes drive transistor grid rises bright voltage to increased initial voltage interval at initial stage, be convenient for carry out the grey scale and divide, avoided the grey scale to divide the voltage difference between the different grey scales after the grey scale to be less than IC's minimum voltage resolution, reduced the degree of difficulty that the grey scale switches, the control that the grey scale of being convenient for switches more.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a schematic circuit diagram of a conventional pixel circuit;
fig. 2 is a schematic circuit diagram of a pixel circuit according to an embodiment of the present disclosure;
FIG. 3 shows various capacitors in a pixel circuit according to an embodiment of the present invention;
fig. 4 is a graph of voltage variation at the gate and the second electrode of the driving transistor in the pixel circuit according to an embodiment of the present application and a conventional pixel circuit.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
The technical solution of the present application will now be described with reference to specific embodiments.
The application provides a pixel circuit, as shown in fig. 2, for driving a light emitting element, comprising a data writing transistor T2, a reset detection transistor T3, a driving transistor T1 for generating a driving current, and a voltage holding unit for pulling up a lighting voltage of a gate of the driving transistor T1;
the gate electrode of the data writing transistor T2 is connected to a first driving signal WR, and the first electrode of the data writing transistor T2 is connected to a data voltage VDataA second electrode of the data write transistor T2 is connected to the gate of the driving transistor T1;
a first electrode of the driving transistor T1 is connected to an anode voltage VDDA second electrode of the driving transistor T1 is connected to a first terminal of the driving light emitting element, and a second terminal of the light emitting element is connected to a cathode voltage VSS；
The gate of the reset detection transistor T3 is connected to the second driving signal RD, the first electrode of the reset detection transistor T3 is connected to the reset detection signal line Monitor, and the second electrode of the reset detection transistor T3 is connected in parallel between the second electrode of the driving transistor T1 and the first end of the driving light emitting element;
the voltage holding unit is connected in parallel between the second electrode of the data writing transistor T2 and the gate of the driving transistor T1.
It can be understood that the current ink-jet printing OLED device has the characteristics of low lighting voltage and narrow voltage interval. As shown in fig. 1, which is a structural schematic diagram of a current pixel circuit, the current pixel circuit is composed of a driving thin film transistor T10, a signal writing thin film transistor T20, a detecting thin film transistor T30, and a storage capacitor Cst, and since the storage capacitor Cst is connected between the gate of the driving thin film transistor T10 and the source of the driving thin film transistor T10, the initial driving luminance voltage of the gate of the driving thin film transistor T10 is low, so that the voltage interval that can be adjusted in the pixel circuit is too narrow, and the voltage difference between different gray scales is smaller than the minimum voltage resolution of the IC due to the too narrow voltage interval; affecting normal display of the display panel; in this embodiment, the voltage holding unit for raising the gate lighting voltage of the driving transistor T1 is arranged to raise the gate lighting voltage of the driving transistor T1, so that the initial voltage interval of the initial stage is increased, the gray scale division is facilitated, the voltage difference between different gray scales after the gray scale division is avoided to be smaller than the minimum voltage resolution of the IC, the difficulty of gray scale switching is reduced, and the control of gray scale switching is facilitated.
In an embodiment, as shown in fig. 2, the voltage holding unit includes a voltage holding capacitor C1, a first end of the voltage holding capacitor C1 is connected in parallel between the second electrode of the data writing transistor T2 and the gate of the driving transistor T1, and a second end of the voltage holding capacitor C1 is connected to ground, it can be understood that the second end of the voltage holding capacitor C1 is connected to ground, which is beneficial to increase the lighting voltage of the gate of the driving transistor T1, and the voltage interval is widened to facilitate gray scale division, so that the voltage difference between different gray scales after gray scale division is greater than the minimum voltage resolution of the IC, and the voltage holding capacitor C1 also has a charge storage function, and does not need to use the original storage capacitor Cst, and further, the voltage holding capacitor C1 can be smaller than the original storage capacitor Cst, thereby achieving the effect of saving the level space of the display device, and is more favorable for the design of a high pixel density structure.
In one embodiment, the pixel circuit driving at least comprises a data writing phase and a data writing closing phase;
in the data writing phase, driving the data writing transistor T2, the reset detecting transistor T3, and the driving transistor T1 to be turned on;
in the data write-off phase, the data write transistor T2 and the reset detection transistor T3 are driven to turn off. It is understood that the reset detection transistor T3 transmits the reset voltage of the reset detection signal line Monitor to the first terminal of the light emitting element for resetting by the control of the second driving signal RD, and then controls the data writing transistor T2 to be turned on by the first driving signal WR, and supplies the data voltage V through the data line connected to the data writing transistor T2DataAnd can be stored by the voltage holding capacitor C1 to maintain the stability of the light emitting element current in one period, and finally the light emitting element is supplied with the current for light emission through the driving transistor T1; in addition, the reset detection transistor T3 may be turned on when the light emitting element emits light normally, detect the voltage at the second electrode of the driving transistor T1 and feed back the detected voltage to the IC, and the IC may adjust the data voltage V in a closed loop according to the fed-back voltage dataDataAnd the like, so as to ensure the stable operation of the light-emitting element.
In the embodiment, as shown in fig. 4, a line diagram of voltage variation of the driving elements of the pixel circuit of the present application and the conventional pixel circuit is shown; specifically, at the position of a in fig. 4 a, the lighting voltage of the gate of the driving transistor T1 is 7.4V, which is much higher than the voltage of 4.6V at the gate of the driving thin film transistor T10 in the existing pixel circuit, and further, when the lighting voltage of the light emitting element is 2.5V, the voltage interval between 7.4V and 2.5V is equal to 4.9V, that is, the width of the voltage interval for gray scale division in the pixel circuit of the present application is 4.9V, which is much larger than the width of the voltage interval for gray scale division in the existing pixel circuit.
In one embodiment, during the data write-off phase, a difference between a capacitance of the gate terminal of the driving transistor T1 and a capacitance of the second electrode terminal of the driving transistor T1 is within a threshold capacitance range, and a voltage difference between the gate terminal of the driving transistor T1 and the second electrode terminal of the driving transistor T1 is less than or equal to 0.1V. It is understood that, during the data writing off period, the first driving signal WR and the second driving signal RD may jump from the high level to the low level, so as to limit the difference between the capacitance value of the gate terminal of the driving transistor T1 and the capacitance value of the second electrode terminal of the driving transistor T1 within a threshold capacitance range, thereby preventing the gate terminal of the driving transistor T1 and the second electrode terminal of the moving transistor from generating a feedthru effect, and further facilitating the voltage of the gate terminal of the driving transistor T1 and the voltage of the second electrode terminal of the driving transistor T1 to be internally balanced or cancelled in the pixel circuit, so that the pixel circuits in different pixels are not affected by the position in the display device, and the distance between different pixel circuits and the control unit such as the IC may be different, so that the different pixel circuits generate a feedthru effect due to the difference caused by the RC delay (resistance capacitance delay) Under the condition of different sizes, the display uniformity of the display device is prevented from generating larger differences, and the difference between the capacitance value of one end of the grid electrode of the driving transistor T1 and the capacitance value of one end of the second electrode of the driving transistor T1 is kept within a threshold capacitance range, so that the voltage difference between one end of the grid electrode of the driving transistor T1 and one end of the second electrode of the driving transistor T1 is less than or equal to 0.1V, and the influence of the feedback effect on the display uniformity is reduced.
In the present embodiment, as shown in fig. 3, in the data writing off phase, the capacitance of the gate terminal of the driving transistor T1 is equal to the sum of the capacitance of the parasitic capacitor Cgs1 of the data writing transistor T2 and the capacitance of the voltage holding capacitor C1. In the data write-off period, the capacitance value of the second electrode terminal of the driving transistor T1 is equal to the sum of the capacitance value of the parasitic capacitance Cgs2 of the reset detection transistor T3 and the capacitance value of the intrinsic capacitance Coled of the light emitting element. Specifically, in the data write off phase, the difference between the capacitance value of the voltage holding capacitor C1 and the capacitance value of the intrinsic capacitor Coled of the light emitting element is less than or equal to 20 fF. It is understood that the capacitance value of the voltage holding capacitor C1 can be adjusted according to the actual situation, and specifically, the capacitance value of the voltage holding capacitor C1 is 200 fF.
In the pixel circuit provided in the embodiment of the present application, the data writing transistor T2, the reset detecting transistor T3, and the driving transistor T1 are all P-type transistors.
The application also provides a display device comprising the pixel circuit.
To sum up, this application is used for drawing high through setting up the voltage holding unit that drive transistor T1 grid started to light voltage promotes drive transistor T1 grid started to light voltage to increased the initial voltage interval of initial stage, be convenient for carry out the grey scale and divide, avoided the voltage difference between the different grey scales after the grey scale divides to be less than IC's minimum voltage resolution, reduced the degree of difficulty that the grey scale switches, the control that the grey scale of being convenient for switched more.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The above embodiments of the present application are described in detail, and specific examples are applied in the present application to explain the principles and implementations of the present application, and the description of the above embodiments is only used to help understand the technical solutions and core ideas of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.
Claims (8)
1. A pixel circuit for driving a light emitting element, comprising a data writing transistor, a reset detection transistor, a driving transistor for generating a driving current, and a voltage holding unit for pulling up a gate turn-on voltage of the driving transistor;
the grid electrode of the data writing transistor is connected to a first driving signal, the first electrode of the data writing transistor is connected to a data voltage, and the second electrode of the data writing transistor is connected to the grid electrode of the driving transistor;
the first electrode of the driving transistor is connected to an anode voltage, the second electrode of the driving transistor is connected to the first end of the driving light-emitting element, and the second end of the light-emitting element is connected to a cathode voltage;
the grid electrode of the reset detection transistor is connected to a second driving signal, the first electrode of the reset detection transistor is connected to a reset detection signal line, and the second electrode of the reset detection transistor is connected between the second electrode of the driving transistor and the first end of the driving light-emitting element in parallel;
the voltage holding unit is connected in parallel between the second electrode of the data writing transistor and the gate of the driving transistor;
the voltage holding unit comprises a voltage holding capacitor, a first end of the voltage holding capacitor is connected between the second electrode of the data writing transistor and the grid electrode of the driving transistor in parallel, and a second end of the voltage holding capacitor is grounded;
the capacitance value of the voltage holding capacitor is 200 fF.
2. The pixel circuit according to claim 1, wherein the pixel circuit driving includes at least a data write phase and a data write off phase;
in the data writing phase, driving the data writing transistor, the reset detection transistor and the driving transistor to be conducted;
and driving the data writing transistor and the reset detection transistor to be turned off in the data writing turn-off phase.
3. The pixel circuit according to claim 2, wherein a difference between a capacitance value of the gate terminal of the driving transistor and a capacitance value of the second electrode terminal of the driving transistor is within a threshold capacitance range during the data write-off phase, and a voltage difference between the gate terminal of the driving transistor and the second electrode terminal of the driving transistor is less than or equal to 0.1V.
4. The pixel circuit according to claim 3, wherein, in the data writing off phase, a capacitance value of the gate terminal of the driving transistor is equal to a sum of a capacitance value of a parasitic capacitor of the data writing transistor and a capacitance value of the voltage holding capacitor.
5. The pixel circuit according to claim 4, wherein a capacitance value of the second electrode terminal of the driving transistor is equal to a sum of a capacitance value of a parasitic capacitance of the reset detection transistor and a capacitance value of an intrinsic capacitance of the light emitting element in the data write off phase.
6. The pixel circuit according to claim 5, wherein a difference between a capacitance value of the voltage holding capacitor and a capacitance value of an intrinsic capacitor of the light emitting element is 20fF or less in the data writing off phase.
7. The pixel circuit according to claim 1, wherein the data writing transistor, the reset detection transistor, and the driving transistor are all P-type transistors.
8. A display device comprising the pixel circuit according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011260555.1A CN112365846B (en) | 2020-11-12 | 2020-11-12 | Pixel circuit and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011260555.1A CN112365846B (en) | 2020-11-12 | 2020-11-12 | Pixel circuit and display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112365846A CN112365846A (en) | 2021-02-12 |
| CN112365846B true CN112365846B (en) | 2021-10-08 |
Family
ID=74515363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011260555.1A Active CN112365846B (en) | 2020-11-12 | 2020-11-12 | Pixel circuit and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112365846B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115565481B (en) * | 2022-09-29 | 2024-06-04 | Tcl华星光电技术有限公司 | Display backboard and mobile terminal |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102890910A (en) * | 2012-10-15 | 2013-01-23 | 北京大学 | Synchronous and asynchronous bi-gate thin film transistor (TFT)-organic light emitting diode (OLED) pixel drive circuit and drive method thereof |
| CN105741781A (en) * | 2016-04-12 | 2016-07-06 | 深圳市华星光电技术有限公司 | Amoled pixel driving circuit and pixel driving method |
| CN106504703A (en) * | 2016-10-18 | 2017-03-15 | 深圳市华星光电技术有限公司 | AMOLED pixel-driving circuits and driving method |
| CN108538253A (en) * | 2018-04-23 | 2018-09-14 | 深圳市华星光电半导体显示技术有限公司 | The pixel driver system and driving method of displayer |
| CN109979383A (en) * | 2019-04-24 | 2019-07-05 | 深圳市华星光电半导体显示技术有限公司 | Pixel-driving circuit and display panel |
| CN110491326A (en) * | 2019-08-28 | 2019-11-22 | 深圳市华星光电半导体显示技术有限公司 | Pixel circuit, display panel and display device |
| CN111261110A (en) * | 2020-03-09 | 2020-06-09 | 深圳市华星光电半导体显示技术有限公司 | AMOLED pixel driving circuit, pixel driving method and display panel |
| CN111383600A (en) * | 2020-04-28 | 2020-07-07 | 厦门天马微电子有限公司 | Pixel driving circuit, driving method, display panel and display device |
| US20200302870A1 (en) * | 2019-03-18 | 2020-09-24 | Samsung Display Co., Ltd. | Stage and emission control driver having the same |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002297053A (en) * | 2001-03-30 | 2002-10-09 | Sanyo Electric Co Ltd | Active matrix type display device and inspection method therefor |
-
2020
- 2020-11-12 CN CN202011260555.1A patent/CN112365846B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102890910A (en) * | 2012-10-15 | 2013-01-23 | 北京大学 | Synchronous and asynchronous bi-gate thin film transistor (TFT)-organic light emitting diode (OLED) pixel drive circuit and drive method thereof |
| CN105741781A (en) * | 2016-04-12 | 2016-07-06 | 深圳市华星光电技术有限公司 | Amoled pixel driving circuit and pixel driving method |
| CN106504703A (en) * | 2016-10-18 | 2017-03-15 | 深圳市华星光电技术有限公司 | AMOLED pixel-driving circuits and driving method |
| CN108538253A (en) * | 2018-04-23 | 2018-09-14 | 深圳市华星光电半导体显示技术有限公司 | The pixel driver system and driving method of displayer |
| US20200302870A1 (en) * | 2019-03-18 | 2020-09-24 | Samsung Display Co., Ltd. | Stage and emission control driver having the same |
| CN109979383A (en) * | 2019-04-24 | 2019-07-05 | 深圳市华星光电半导体显示技术有限公司 | Pixel-driving circuit and display panel |
| CN110491326A (en) * | 2019-08-28 | 2019-11-22 | 深圳市华星光电半导体显示技术有限公司 | Pixel circuit, display panel and display device |
| CN111261110A (en) * | 2020-03-09 | 2020-06-09 | 深圳市华星光电半导体显示技术有限公司 | AMOLED pixel driving circuit, pixel driving method and display panel |
| CN111383600A (en) * | 2020-04-28 | 2020-07-07 | 厦门天马微电子有限公司 | Pixel driving circuit, driving method, display panel and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112365846A (en) | 2021-02-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109509428B (en) | Pixel driving circuit, pixel driving method and display device | |
| CN111402789B (en) | Pixel driving circuit and display panel | |
| CN112037716B (en) | Pixel circuit, display panel and display device | |
| CN107492343B (en) | Pixel driving circuit for OLED display device and OLED display device | |
| US10535302B2 (en) | Pixel circuit, method for driving the same, and display apparatus | |
| CN111341258B (en) | Pixel driving circuit, driving method thereof and display device | |
| US20210065624A1 (en) | Pixel Circuit, Method for Driving Pixel Circuit, and Display Device | |
| CN106952615B (en) | A kind of pixel-driving circuit and its driving method, display device | |
| CN110164375B (en) | Pixel compensation circuit, driving method, electroluminescence display panel and display device | |
| CN109712568B (en) | A pixel driving circuit and a driving method thereof, a display panel, and a display device | |
| CN114783352B (en) | A μLED unit circuit, light emitting control method and pixel device | |
| CN106683605A (en) | Failure pixel detection circuit and method and display device | |
| CN104835453B (en) | A kind of image element circuit, driving method and display device | |
| CN111583862B (en) | Pixel driving circuit and OLED display panel | |
| CN110491340B (en) | Microdisplay pixel device, microdisplay device and compensation method | |
| US11462160B2 (en) | Organic light emitting diode display panel and display device | |
| CN113990257A (en) | Pixel circuit, driving method and display device | |
| CN114120907A (en) | Pixel circuit, display device and driving method thereof | |
| CN115762410B (en) | Pixel circuit, driving method and display device | |
| CN112365846B (en) | Pixel circuit and display device | |
| CN117136401B (en) | Pixel circuit, pixel driving method and display device | |
| CN108877679A (en) | Pixel circuit, display device and image element driving method | |
| CN114898712B (en) | Pixel circuit, pixel driving method and display device | |
| US12424166B2 (en) | Display panel and display device | |
| CN113936599A (en) | Pixel circuit, driving method and display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |